Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <d968e58a-3abd-8e3c-cee3-00c19c1b6430@linux.intel.com>
Date: Mon, 5 Mar 2018 08:41:43 -0800
From: Dave Hansen <dave.hansen@...ux.intel.com>
To: Alexander Popov <alex.popov@...ux.com>,
 kernel-hardening@...ts.openwall.com, Kees Cook <keescook@...omium.org>,
 PaX Team <pageexec@...email.hu>, Brad Spengler <spender@...ecurity.net>,
 Ingo Molnar <mingo@...nel.org>, Andy Lutomirski <luto@...nel.org>,
 Tycho Andersen <tycho@...ho.ws>, Laura Abbott <labbott@...hat.com>,
 Mark Rutland <mark.rutland@....com>,
 Ard Biesheuvel <ard.biesheuvel@...aro.org>, Borislav Petkov <bp@...en8.de>,
 Richard Sandiford <richard.sandiford@....com>,
 Thomas Gleixner <tglx@...utronix.de>, "H . Peter Anvin" <hpa@...or.com>,
 Peter Zijlstra <a.p.zijlstra@...llo.nl>, "Dmitry V . Levin"
 <ldv@...linux.org>, Emese Revfy <re.emese@...il.com>,
 Jonathan Corbet <corbet@....net>, Andrey Ryabinin <aryabinin@...tuozzo.com>,
 "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
 Thomas Garnier <thgarnie@...gle.com>,
 Andrew Morton <akpm@...ux-foundation.org>,
 Alexei Starovoitov <ast@...nel.org>, Josef Bacik <jbacik@...com>,
 Masami Hiramatsu <mhiramat@...nel.org>, Nicholas Piggin <npiggin@...il.com>,
 Al Viro <viro@...iv.linux.org.uk>, "David S . Miller" <davem@...emloft.net>,
 Ding Tianhong <dingtianhong@...wei.com>, David Woodhouse
 <dwmw@...zon.co.uk>, Josh Poimboeuf <jpoimboe@...hat.com>,
 Steven Rostedt <rostedt@...dmis.org>,
 Dominik Brodowski <linux@...inikbrodowski.net>,
 Juergen Gross <jgross@...e.com>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Dan Williams <dan.j.williams@...el.com>,
 Mathias Krause <minipli@...glemail.com>,
 Vikas Shivappa <vikas.shivappa@...ux.intel.com>, Kyle Huey
 <me@...ehuey.com>, Dmitry Safonov <dsafonov@...tuozzo.com>,
 Will Deacon <will.deacon@....com>, Arnd Bergmann <arnd@...db.de>,
 x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH RFC v9 2/7] x86/entry: Add STACKLEAK erasing the kernel
 stack at the end of syscalls

On 03/03/2018 12:00 PM, Alexander Popov wrote:
>  Documentation/x86/x86_64/mm.txt  |   2 +
>  arch/Kconfig                     |  27 ++++++++++
>  arch/x86/Kconfig                 |   1 +
>  arch/x86/entry/entry_32.S        |  88 +++++++++++++++++++++++++++++++
>  arch/x86/entry/entry_64.S        | 108 +++++++++++++++++++++++++++++++++++++++
>  arch/x86/entry/entry_64_compat.S |  11 ++++

This is a *lot* of assembly.  I wonder if you tried at all to get more
of this into C or whether you just inherited the assembly from the
original code?

Powered by blists - more mailing lists

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.